Boiling flask, round bottom high quality Low price Fast delivery Boiling flask, round bottom HDBF02 Boiling flask, round bottom, long neck: With printed graduations for 5-10000ml HDBF03 Boiling flask, round bottom, short neck: With printed graduations for 250-2000ml Made of special Borosilicate glass (Bore 3.3) that has excellent chemical and physical properties And >80% silica content Stable ...